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BICSI Installer 1 Containing 555
Terminologies with Complete
Elaborations 2024-2025.
abandoned cable - Answer: the installed cables and cabling (connectorized cables) that are not terminated at both ends at a connector or other equipment and not identified with a tag for future use. above finished floor (AFF) - Answer: the standard mounting height or vertical distance for a fixture, ceiling, device, or any other object measured from the finished floor surface to the center line of the object as the measurement point.
absorption - Answer: a phenomenon causing attenuation of wave signals (electromagnetic, optical, acoustic) passing through a medium. It occurs when gaseous molecules or suspended water particles in the atmosphere absorb the signal energy and convert it into heat due to molecular resonance. A-C-rated fire-retardant plywood - Answer: The plywood treated with a fire- retardant that has a smooth-finished A grade side that is exposed for the purpose of mounting equipment and a rough-finished C grade side. acceptance plan - Answer: a facilitating agreement between parties (contractor and client or client representative) that defines satisfactory completion of a project task or complete project. It may include items on which the client's acceptance is dependent (delivery of as-built drawings, test certification). acceptance test - Answer: a test or set of tests performed to demonstrate satisfactory completion of a predetermined task or group of tasks on which acceptance is dependent. Access Control System (ACS) - Answer: An interconnected set of controllers managing the entrance and exit of people through secure areas. Access Floor - Answer: A system consisting of completely removable and interchangeable floor panels that are supported on adjustable pedestals or stringers (or both) to allow entry to the area beneath. Also called a raised floor.
Aerial Entrance - Answer: An entrance facility where the telecommunications cables providing service to a building are placed overhead and the entry point is located above the ground level Alien crosstalk - Answer: The unwanted coupling of signals into a balanced twisted-pair in a given copper cable from one or more balanced twisted-pairs external to the given cable. All-threaded-rod (ATR) - Answer: The straight section of round rod stock that has threads installed over its entire length. Alternating current (ac) - Answer: A current flow that alternates periodically (usually sinusoidal) in magnitude and direction. American wire guage (AWG) - Answer: A system used to specify wire size. The greater the wire diameter, the smaller the AWG value. ampere (A) - Answer: A unit of measure of the rate of electron flow or current in an electrical conductor. In Ohm's Law, one A is equal to the current produced by one volt (V) flowing through a resistance of one ohm. Amplifier - Answer: a device that increases the voltage, current, or power of a signal. The maximum absolute value reached by a voltage or current waveform.
Analog signal - Answer: A signal in the form of a wave that uses continuous variations of a physical characteristic over time (voltage amplitude, frequency) to transmit information. Anchor - Answer: A device inserted into a structural element or ground and provides a point of attachment for restraining or securing objects (racks, poles) Angled Physical Contact (APC) - Answer: An optical fiber connector that is polished to an angle of 8-10 degrees to reduce the back-reflection of the signal. Annunciating device - Answer: A unit containing one or more indicator lamps, alphanumeric displays, or other equivalent means in which each indication provides status information about a circuit, condition, or location. Annular space - Answer: The ring of space between a penetrating element such as a cable, conduit, or other building service and the fire-rated barrier Antenna - Answer: A conductive structure specifically designed to couple or radiate electromagnetic energy. In radio frequency (RF) systems, the antenna may be used to both transmit and receive electromagnetic energy. Aramid yarn - Answer: A material with exceptional tensile strength and coefficient of thermal expansion near that of glass used in optical fiber cable to provide support and addition protection of the buffered fiber strands.
Authority having jurisdiction. (AHJ) - Answer: The building official, electrical inspector, fire marshal, or other individuals or entities responsible for interpretation and enforcement of local building and electrical codes. Autotest - Answer: A function used by field test instruments to run all the required tests in a sequential manner without operator intervention. Backboard - Answer: A panel (wood, metal) used for mounting connecting hardware and equipment Backbone - Answer: A facility (pathway, cable, conductors, optical fibers) between any of the following spaces: telecommunications rooms (TRs), telecommunications enclosures (TEs), common TRs, floor-serving terminals, entrance facilities (EFs), equipment rooms (ERs) and common ERs. Backbone bonding conductor (BBC) - Answer: A telecommunications bonding connection is used to equalize the potential between secondary bonding busbars (SBBs) located on the same floor of a structure. Backbone pathway - Answer: The portion of the pathway system that permits the placing of main and high-volume communication cables between the entrace location and all cross-connect points within a building and between buildings. Backscatter - Answer: The scattering of light into a direction opposite to the original direction.
Backup power - Answer: Power that creates a temporary uninterrupted power source in the event that a main power source goes down. Balanced twisted-pair cable - Answer: A multi-conductor communications cable composed of two or more copper conductors twisted in a manner designed to cancel electrical interference. Balun - Answer: A device used to convert unbalanced to balanced transmission of one impedance value to another or one media type to another. Bandwidth - Answer: A range of frequencies available for signaling expressed in hertz (Hz). It is used to denote the potential information handling capacity of the medium, device, or system. Barrier - Answer: A partition, divider, or other separation that provides complete separation from adjacent compartments. Beam clamp - Answer: A device attached to a beam or other building structure above the ceiling or under the floor to hold cable supports or equipment. Bend radius - Answer: The radius of curvature that a media can bend without signal degradation. For example, communications cabling exceeding the cables' bend radiius, determined by the cable's construction and contents, may cause
that the bonded party will meet specific requirements, in a specific way, within a specific time period. Bonding - Answer: The effective joining of metallic parts to form an electrically conductive path that will ensure electrical continuity and the capacity to safely conduct any current likely to be imposed. Bonding conductor (BC) - Answer: A conductor used specifically for the purpose of bonding. Bonding Network (BN) - Answer: A set of interconnected conductive structures that provides an electromagnetic shield for electronic systems and personnel. Branch Circuit - Answer: The conductors between the final overcurrent device protecting the circuit and the outlet/connectors. Break-out cable - Answer: The multifiber or multi-conductor cables where each optical fiber or conductor pair is further protected by an additional jacket and optional strength elements. Bridging clip - Answer: An encased or bare metal clip used to couple copper communication cable conductors on a connecting block and provide a point of physical disconnection.
Bridle ring - Answer: A ring that is circular in shape but is open rather than closed. It has a pointed shaft at its apex that is threaded for installation into wood or rethreaded devices. Broadband - Answer: An analog design simultaneously using multiple communication channels separated by guard bands. Commonly used to described a high-speed digital signal associated with backbone or multiplexed transmissions. Buffer coating - Answer: A protective thermoplastic material applied to the acrylate layer of an optical fiber strand to protect against environmental hazards. May be more than one layer. Buffer tube - Answer: A supplemental loose-fitting cover applied over the primary coated optical fibers at time of installation. Building automation system (BAS) - Answer: A control system consisting of hardware (controllers, optical fiber cabling, input/output devices) and a software application or suite of software applications that automate the electrical, mechanical, or other building and facility subsystems. Building distributor (BD) - Answer: An international equivalent term for intermediate cross0connect (IC) Building Entrance - Answer: The point where services media leaves its outside plant (OSP) pathway to enter and leave the building. For example, the building
Bus topology - Answer: A linear networking topology in which each communications device or network has a single connection to a shared medium that serves as the communications channel. Also called a point-to-multipoint. topology. Bushing - Answer: An insulating lining for an aperture through which multiple conductors may pass and are typically associated with conduits and other pathways. Butt set - Answer: A special type of telephone used by telecom technicians when installing and testing local lines. Also known as a lineman's test set. Cabinet - Answer: An enclosure that contrains and protects electrical, telecommunications, or electronic equipment. Cabinets may be wall mounted, freestanding, or self-supporting. Cable - Answer: 1. An assembly of one or more insulated conductors or optical fibers within an enveloping sheath that may be screened or unscreened. 2. The act of installing communications cable. Cable brake - Answer: Another term for reel brake Cable-end locator kit - Answer: A set of numbered 8-pin modular plugs that can be identified by the cable tester. Also called an office locator kit.
Cable fill - Answer: 1. A term used to describe the number of communication cables permitted in a cabling pathway, calculated as a percentage of the total number of cables with a given cross-sectional area. 2. The number of working conductor pairs or optical fibers in a cable. Cable management - Answer: The use of physical structures within cabling pathways, racks, cabinets, and other structures to contain cabling in a neat or orderly fashion. Cable plant - Answer: The portion of an information and communications technology (ICT) system consisting of non-wireless systems, equipment, and materials. Cable reel - Answer: A spool or cylinder for storing and distributing cable. Cable run - Answer: A colloquial term for a length of cabling from the telecommunications room (TR) or telecommunications enclosure (TE) to the point of termination (outlet, deivce) Cable sheath - Answer: A covering over the insulated optical fiber strands or copper conductors cable sheath A covering over the insulated optical fiber strands or copper conductors forming an assembly of components that may include one of more metallic members (shields) strength members, jackets, and other protective elements
schools, but can be applied to industrial park, military facilities, and other premises with multiple buildings. Campus distributor (CD) - Answer: An international equivalent term for main cross-connect (MC). Capacitance - Answer: The ability of an electronic component to store electrical energy. Carbon block - Answer: An overvoltage protector that uses closely spaced carbon electrodes (granules) for voltage limiting. Category - Answer: A rating that defines the minimum required mechanical properties, transmission characteristics, and performance expectations of communications cabling components and systems. Catwalk - Answer: An elevated walkway provided in some buildings to help workers reach utility spaces. Ceiling - Answer: The upper surface of a space regardless of height. Areas with a suspended ceiling have two ceilings, one visible from the floor and one above the suspended ceiling.
Central Office (CO) - Answer: Also called public exchange, an access provider (AP) or service provider (SP) site that is conveniently located to provide telephony services (lines) to serve subscriber homes and businesses. Certification - Answer: A formal procedure by which an accredited or authorized person or agency assesses and verifies (and attests in writing by issuing a certificate) the attributes, characteristics, quality, qualification, or status of individuals or organizations, goods, or services, procedures or processes, or events or situations in accordance with established requirements or standards. Certification test set - Answer: A test set designed specifically to measure the properties of a circuit to determine whether the circuit meets certification standards. Change order - Answer: A written and signed document issued after the construction agreement has been signed authorizing additions to, deletions from, or modifications of the work to be completed or an adjustment in the contract sum or time. (CSI). Channel - Answer: 1. The end-to-end transmission path connecting interfaces of any two pieces of application-specific equipment. Equipment cords and work area cords are included in the channel. 2. In frequency, division multiplexing (FDM), a band in the frequency spectrum that is assigned to a specific logical connection. 3. In time division multiplexing (TDM), a time that is assigned to a specific logical
Cleave - Answer: The process of breaking an optical fiber by a controlled fracture of the glass to obtain an optical fiber end that is flat, smooth and perpendicular to the optical fiber axis. Coaxial cable - Answer: A cable consisting of a central metallic inner conductor separated from an enclosing outer conductor by a dielectric material. This material may be solid, foam, suitable gas, or dry air. The outer conductor comprises a metallic braid, a foil layer, or a combination of braid and foil. Code - Answer: A rule or set of rules intended to ensure safety during the installation and use of materials, components, fixtures, systems, premises, and related subjects. Codes typically are invoked and enforced through government regulation. Commissioning - Answer: The start-up of a system that includes testing and adjusting the systems to ensure proper functioning and adherence to design criteria. Commissioning also includes the instruction of building representatives in the use of building systems. Computer room - Answer: An architectural space with the primary function of accommodating data processing equipment. Concentricity - Answer: The degree with which the core and cladding of an optical fiber cable, or the center conductor and shield of a coaxial cable, share the same central axis.
Conductance - Answer: The measure of the ease with which electrical current flows through a conductor and is measured in units of siemens (S). Conductor - Answer: A material or media (solid, liquid, gas) for transmitting electric current, electromagnetic waves, or light. Conduit - Answer: A raceway of circular cross section which provides physical protection for the cable and wires contained inside. Conduit elbow - Answer: A manufactured bend for use with the conduit which provides a uniform change of direction and bend radius. Conduit run - Answer: The multiple sections of conduit that are joined together with fittings. Cone - Answer: A safety marker, typically brightly colored, may be orange or green n color, that is used to designate a secure off-limits area for non-workers. Confined space - Answer: As defined by the United States (U.S.) Occupational Safety and Health Administration (OSHA), the space a worker can enter and work within but has limited or restrictive means of entry or exit and that is not designed for continuous occupancy (maintenance holes, splice pits, crawl spaces, attics)
